Complexes of Uranyl Nitrate, Uranyl Acetate, Uranyl Thiocyanate and Uranyl Chloride with Benzoyl, Salicyloyl and Isonicotinoyl Hydrazines

Abstract

Some uranyl complexes of benzoylhydrazine (BH), sali-cyloylhydrazine (MSH) and isonicotinoylhydrazine (ISH) of the type UO₂ LX₂°nH₂O (where L = BH, MSH and ISH, X = NO₃, CH₃COO⁻, SCN⁻, Cl⁻ and n = 0,1 or 2) have been prepared and characterized by analytical data, decomposition temperature, molar conductance and infrared spectral measurements down to 200 cm⁻¹. The molar conductance data in DMF indicate that all the completes are ionic in this solvent. The infrared spectral data indicate that the BH and MSH coordinate as neutral bi-dentate ligands through the -NH2 and >C=O groups and ISH coordinates as a neutral tridentate ligand through the -NH2, >C=O and the ring nitrogen. The nitrate and acetate groups function as a bidentate chelating ligand and thiocyanate and chloride groups as a terminal ligand.